Safe, &amp;c.



' Patented Feb. 27, I900.

No. 644,5I8.

S JABLUNSKI.

SAFE, 6w. 1

(Application filed Oct. 18, 1899.\

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. UNITED STATES PATENT OFFICE.

sTE AN JABLONSKI, on WARSAW, RUSSIA, AssIcNo To STEFAN NIEWIAROWSKI, orsAME PLAoE.

SAFE, 8w.

SPECIFICATION forming part of Letters Patent No. 644,518, dated February27, 1900. Application filed October 13,1899. Serial No. 733,517. (Nomodel.)

To aZZ whom it may concern:

Be it known that I, STEFAN JABLONSKI, a subject of the Emperor ofRussia, residing at Warsaw, in the Province of Poland, in the Empire ofRussia, have invented certain new and useful Improvements in Safes andother Fireproof Receptacles; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawing, and toletters of reference marked thereon, which forms a part of thisspecification.

This invention relates to an improved construction of safes and otherfireproof receptacles whereby in the case of these being subjectedexternally to heat a perfect closure of all joints of the safe throughwhich heat might penetrate into the interior is effected, while at thesame time the inner surface of the safe or receptacle cannot becomeheated to any high degree either by conduction or radiation, so that thesafe can be lined internally with wood. V

The invention is based on the known property of anisolating fireproofmass, composed mainly of water-glass, spirit-varnish, and abinding-cement, (made of baryta, alumina, graphite, &c.,) expandingunder heat, and consequently completely filling out the spaces betweenthe inner and outer walls of the re-.

ceptacle, as also the joints or interstices thereof and of the doors.

The invention consists in the application. on the inner side of theouter wall of the safe or at other points between the inner and outerwalls of bars arranged in the form of grating, the interstices of whichare left unfilled by the said fireproof-filling mass (which is appliedin the. form of hard slabs or blocks) so long as the safe is notsubjected to excessive external heating. At the joints of the doors,&c., the filling mass is covered in by simple thin wood sheating. Whenthe safe is subjected externally to fire heat, the filling mass expandsand fills out the free spaces between the grating-bars, and as theWooden bars of the grating and the sheathing burn away the spaces andopen joints left thereby also become filled with the expanding mass. Theinner lining of the safe is thus entirely surrounded by a hermeticinclosure of a material that is a bad conductor of heat, and the liningand contents of the safe are consequently effectually protected.

The accompanying drawing shows by way of example a part-sectional planof a safe or other fireproof receptacle constructed according to myinvention.

Against the inner surfaces of the outer walls (t of the safe are placedframes 17, formed of wood gratings, and between these gratings and. theinner walls or wood lining e (which may have an outer sheet-metalcovering d) is placed the fireproof material 0, which is a bad conductorof heat, the interstices between the wooden bars of the grating beingleft free. The fireproof mass is in the form of hard slabs, which onbeing fitted in have 1heir joints made good by some of the mass in afused state, or the mass can be introduced in the form of layers in aplastic condition confined between sheets of pasteboard and be unitedtogether by pressing.

The door or doors of the safe are constructed in a similar manner, andat the joints the fireproof mass is covered by thin wood sheathing f.

When the fireproof material 0 is heated by conduction through the outerwalls of the safe, it expands and fills out the spaces of the woodgratings, and when these have burned away, as also the sheathing f, atthe joints the mass also expands into and completely fills out thespaces left by these, so that the inner wall or wooden lining of thesafe is effectually inclosed on all sides by the fireproof material.

I claim 1 1. In a safe, a filler between the inner and outer wallscomposed of a fireproof compound expansible when exposed to the actionof heat and a thin wood sheathing or lining covering said filler at thedoor-joints, for the purpose set forth.

2. In a safe, a filler between the inner and outer walls made of slabsof a fireproof compound expansible when exposed to the action I myinvention I have signed my name in presof heat, a Wood gratinginterposed between enoe of two subscribing witnesses. said filler andtheonter Walls of the safe, and 1 1 a thin wood sheathing or liningcovering the S'IEB AN JABL-ONSKI' 5 filler at the door-joints, for thepurpose set Witnesses:

forth. BoLEsDAW HORODZIN, In testimony that I claim the foregoing asADAM MIOKICWICZ.

